Hybrid drive train of a motor vehicle and method for controlling a hybrid drive train

摘要

A hybrid drive train includes an internal combustion engine, an electromagnetic transmission downstream of the internal combustion engine and an axle drive downstream of the electromagnetic transmission. The electromagnetic transmission includes a first and a second electric machine and a stator in common for the first and the second electric machine. The first electric machine has a drive rotor connected to an input shaft. The second electric machine has an output drive rotor connected to an output shaft. An effective transmission ratio can be set by an axial displacement of the stator in relation to the drive rotor and the output drive rotor. A driving battery is connected to a short-circuit winding of the stator via switchable lines and power electronics having an associated controllable DC-DC converter, so that a flow of energy between the first and second electric machines and the driving battery can be controlled.